* {
  padding: 0;
  margin: 0;
}

html,
body {
  height: 100%;
  width: 100%;
}

.box {
  position: relative;
  left: 400px;
  top: 300px;
}

.box > .smallBox,
.box > .bigBox {
  position: relative;
  width: 300px;
  height: 300px;
  border: 1px solid #000;
  min-width: 300px;
}

.box > .smallBox > .mask {
  position: absolute;
  left: 0;
  top: 0;
  width: 100px;
  height: 100px;
  background-color: rgba(0, 0, 0, 0.5);
}

.box > .smallBox > img {
  width: 100%;
  height: 100%;
}

.box > .bigBox {
  /* display: none; */
  position: absolute;
  left: 300px;
  top: 0;
  overflow: hidden;
}

.box > .bigBox > img {
  width: 200%;
}
.box2>img{
width: 75px;
height: 75px;
}
